diff options
Diffstat (limited to 'libavformat/matroskaenc.c')
| -rw-r--r-- | libavformat/matroskaenc.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index baf851f481..9bbec1c027 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -158,6 +158,8 @@ typedef struct mkv_cues { int num_entries; } mkv_cues; +struct MatroskaMuxContext; + typedef struct mkv_track { int write_dts; int has_cue; @@ -171,6 +173,13 @@ typedef struct mkv_track { int64_t duration_offset; int64_t codecpriv_offset; int64_t ts_offset; + /* This callback will be called twice: First with a NULL AVIOContext + * to return the size of the (Simple)Block's data via size + * and a second time with the AVIOContext set when the data + * shall be written. + * The callback shall not return an error on the second call. */ + int (*reformat)(struct MatroskaMuxContext *, AVIOContext *, + const AVPacket *, int *size); } mkv_track; typedef struct MatroskaMuxContext { @@ -2433,6 +2442,8 @@ static int mkv_write_block(AVFormatContext *s, AVIOContext *pb, #endif if (par->codec_id == AV_CODEC_ID_AV1) { err = ff_av1_filter_obus_buf(pkt->data, &data, &size, &offset); + } else if (track->reformat) { + err = track->reformat(mkv, NULL, pkt, &size); } else data = pkt->data; @@ -2483,9 +2494,13 @@ static int mkv_write_block(AVFormatContext *s, AVIOContext *pb, put_ebml_num(pb, track_number, track->track_num_size); avio_wb16(pb, ts - mkv->cluster_pts); avio_w8(pb, (blockid == MATROSKA_ID_SIMPLEBLOCK && keyframe) ? (1 << 7) : 0); + if (track->reformat) { + track->reformat(mkv, pb, pkt, &size); + } else { avio_write(pb, data + offset, size); if (data != pkt->data) av_free(data); + } if (blockid == MATROSKA_ID_BLOCK && !keyframe) put_ebml_sint(pb, MATROSKA_ID_BLOCKREFERENCE, track->last_timestamp - ts); |